FR2348051A1 - Hydraulically operated sheet metal piercing tool - has intermediate chamber between pressure multiplier head and double acting piercing cylinder - Google Patents

Hydraulically operated sheet metal piercing tool - has intermediate chamber between pressure multiplier head and double acting piercing cylinder

Info

Publication number
FR2348051A1
FR2348051A1 FR7610661A FR7610661A FR2348051A1 FR 2348051 A1 FR2348051 A1 FR 2348051A1 FR 7610661 A FR7610661 A FR 7610661A FR 7610661 A FR7610661 A FR 7610661A FR 2348051 A1 FR2348051 A1 FR 2348051A1
Authority
FR
France
Prior art keywords
piercing
cylinder
hydraulically operated
pressure multiplier
double acting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7610661A
Other languages
French (fr)
Other versions
FR2348051B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
POLYMATIC SA
Original Assignee
POLYMATIC SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by POLYMATIC SA filed Critical POLYMATIC SA
Priority to FR7610661A priority Critical patent/FR2348051A1/en
Publication of FR2348051A1 publication Critical patent/FR2348051A1/en
Application granted granted Critical
Publication of FR2348051B1 publication Critical patent/FR2348051B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/32—Perforating, i.e. punching holes in other articles of special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/002—Drive of the tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

A piercing tool for metal sheets, particularly for the motor vehicle industry is hydraulically operated, and to improve its manoeuvrability is formed with a body in the shape of a right angle. The working head (4) operates as a pressure multiplier, and is connected to the piercing cylinder (8) by a chamber (7A) at the junction point between them. This cylinder houses a double acting piston (19) inside another chamber (7B) permanently fed by fluid at a low or medium pressure. Over this piston (19) slides a sleeve (25) acting as a hydraulic sealing member. Its diameter is less than the inside diameter of the first chamber (7A). A spring loaded valve (17) controls the fluid supply to the pressure multiplier.
FR7610661A 1976-04-12 1976-04-12 Hydraulically operated sheet metal piercing tool - has intermediate chamber between pressure multiplier head and double acting piercing cylinder Granted FR2348051A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7610661A FR2348051A1 (en) 1976-04-12 1976-04-12 Hydraulically operated sheet metal piercing tool - has intermediate chamber between pressure multiplier head and double acting piercing cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7610661A FR2348051A1 (en) 1976-04-12 1976-04-12 Hydraulically operated sheet metal piercing tool - has intermediate chamber between pressure multiplier head and double acting piercing cylinder

Publications (2)

Publication Number Publication Date
FR2348051A1 true FR2348051A1 (en) 1977-11-10
FR2348051B1 FR2348051B1 (en) 1981-07-31

Family

ID=9171701

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7610661A Granted FR2348051A1 (en) 1976-04-12 1976-04-12 Hydraulically operated sheet metal piercing tool - has intermediate chamber between pressure multiplier head and double acting piercing cylinder

Country Status (1)

Country Link
FR (1) FR2348051A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0251796A2 (en) * 1986-06-27 1988-01-07 Rodney Linval Improvements in or relating to punches and presses
FR2654037A1 (en) * 1989-11-07 1991-05-10 Renault Press tooling with hydraulic slide control device
WO1994025260A1 (en) * 1993-04-26 1994-11-10 Danly Corporation Press-driven tool module, in particular press-driven cross-punching or bending unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0251796A2 (en) * 1986-06-27 1988-01-07 Rodney Linval Improvements in or relating to punches and presses
EP0251796A3 (en) * 1986-06-27 1988-11-30 Rodney Linval Improvements in or relating to punches and presses
FR2654037A1 (en) * 1989-11-07 1991-05-10 Renault Press tooling with hydraulic slide control device
WO1994025260A1 (en) * 1993-04-26 1994-11-10 Danly Corporation Press-driven tool module, in particular press-driven cross-punching or bending unit
US5606910A (en) * 1993-04-26 1997-03-04 Danly Corporation Press-driven tool module in particular press-driven cross-punching or bending unit

Also Published As

Publication number Publication date
FR2348051B1 (en) 1981-07-31

Similar Documents

Publication Publication Date Title
US2705501A (en) Non-repeat valve
JPS57175042A (en) Pneumatic hydraulic blind hole riveter
NO940422L (en) Double acting accelerator for use with hydraulic impact tools
WO1994025724B1 (en) Reduced waiting time hydraulic drilling jar
US5526644A (en) Oil intensifier cylinder
TW287977B (en) Hydraulic bolt tensioner
GB1356022A (en) Impact tools or apparatus
SE7614407L (en) DEVICE FOR CARRYING OUT A SLOW LOAD OF A BODY INTENDED TO BE PROCESSED AND / OR DEFORMED AND / OR LOADED
US3905635A (en) Material grasping clamp assembly
ES8104953A1 (en) Auxiliary power steering, especially for motor vehicles
GB1012612A (en) Percussion device
FR2348051A1 (en) Hydraulically operated sheet metal piercing tool - has intermediate chamber between pressure multiplier head and double acting piercing cylinder
GB1105348A (en) Hydraulic ram
ES403994A1 (en) Double master cylinder
GB1184531A (en) Fluid Operated Device for Applying a Force Against a Workpiece.
DE3371269D1 (en) Portable hydraulic tools, e.g. hydraulic secateurs, and process for returning their piston cylinder
GB1126371A (en) Improvements in or relating to power-assisted steering mechanisms, particularly for motor-vehicles
FR2306034A1 (en) Reciprocating hydro pneumatic riveting gun - holds the rivet at the opposite end to the head
FR2425565A1 (en) Control for hydraulic press - has valve which brings ram to rest by reducing pressure on upper surface
GB1347264A (en) Valve actuator operated by pressurised fluid
FR2233111A1 (en) Piercing or embossing machine - uses hydraulic fluid to move punch and die against workpiece before piercing
FR2449215A1 (en) Double acting hydraulic ram for door operation - has two small pistons and valves either side of main piston
IT1065860B (en) Machine tool hydraulic drive control - has lever operated spool valve controlling flow to cylinder chamber and chamber of inlet pipe receivable in bore of piston rod
JPS5563955A (en) Control valve of hydraulic booster
GB1418575A (en) Power assisted steering systems

Legal Events

Date Code Title Description
ST Notification of lapse